In Service: 4 January 1934 to 1945
                    
                    
                    
                    First Flight: 4 January 1934
                    
Manufacturer: Henschel
                    Number built: 1
                    
                    
                    
                    Type: Prototype fighter trainer 
                    
                    
Crew: 1 man
                    
Length: 7.3 m
                    
Wingspan: 10 m
                    
Wing area: 14 m²
                    
Height: 2.8 m
                    
Empty: 760 kg 
                    
Loaded: 960 kg 
                    
Engine: 1 × 
Argus 
                    As 10C 8 cylinder air cooled 90º inverted Vee piston 
                    engine producing up to 240 hp
                    
Maximum speed: 278 km/h 
                    
Range: 
                    Service ceiling: 6,500 m
                    
Armament: 
                    Bomb load up to 
                    
Electronics: 
                    Operators: Luftwaffe
                    
Variants: 
                    
                    Other: Prototypes
                    Articles: 
                    
                    
                    
                    The Henschel Hs 121 was a single seat single engine advanced 
                    trainer with high wing 1934 only one prototype built 
                    
                    
                    
                    
                    
                    
                    
                    
                    
                    The Warplanes of the Third Reich.
                    ISBN-10: 0385057822
                    
                    German Aircraft of the Second World War.
                    ISBN-10: 0370000242
                    
                    Hitler's Luftwaffe.
                    ISBN-10: 051718771X
                    
                    For a complete list of 
sources